If you would like to know what percent of the papers did each person grade, you can calculate this using the following steps:
Mr Smith: x% of 50 papers is 38 papers
x% * 50 = 38
x/100 * 50 = 38 /*100/50
x = 38 * 100 / 50
x = 76%
The scholar: 100% - 76% = 24%
Result: Mr Smith graded 76% of the papers and the scholar 24%.